TM 1-1520-240-102-9-3through the HYDRAULICS MAINT PNL LTS circuitbreaker on the No. 2 PDP.a.PRESSURE Indicators. The FLT CONT NO. 1and NO. 2 PRESSURE indicators are electrically connectedto a corresponding pressure transmitter on the respectivepower control module. The UTILITY PRESSURE indicatoris electrically connected to a pressure transmitter on thepressure control module. Indicator operation is independentof caution capsule operation. Power to operate the indica-tors is supplied by the No. 2 DC bus through the HY-DRAULICS PRESS IND circuit breaker on the No. 2 PDP.b.TEMPERATURE Indicators. The indicators arebelow the PRESSURE indicators. They indicate the temper-ature of the hydraulic fluid at the outlet of the correspondingreservoir-cooler. Power to operate the indicators is suppliedby the No. 2 DC bus through the HYDRAULICS FLUIDTEMP circuit breaker on the No. 2 PDP.c.RESERVOIR LEVEL Indicators. The left indicatoris dedicated to the No. 1 and No. 2 flight control hydraulicssystem. In addition, a twoposition FLT CONT switch la-beled NO. 1 and NO. 2 is used to select the system of whichthe fluid level is to be indicated. The reservoir should beserviced to the FULL mark before flight. The right indicatoris dedicated to the utility hydraulic system. When the push-button LEVEL CHECK switch is pressed, the fluid level ineach reservoir-cooler will be indicated by the appropriateindicator.d.FILTER CHANGE Indicating Lights. The indicat-ing lights are arranged in three sets of two for each hydraulicsystem. Each set of indicating lights are labeled PRESS andRTN. The PRESS indicating light in each set monitors thepressure line filter in each system. The RTN indicating lightmonitors the return line filter in each system. When thepressure drop across a filter exceeds 75 psi, indicatingimpending filter bypass, the corresponding filter change indi-cating light will illuminate. Power to operate the filter changeindicating lights is supplied by the No. 2 DC bus through theHYDRAULICS MAINT PNL LTS circuit breaker on the No.2 PDP.e.PUMP FAULT Indicating Lights. The indicatinglights are labeled NO. 1, NO. 2, APU, and UT. They areconnected to sensors in the case drain line of each pump.If the flow rate from the case drain of a pump increases tothe point which causes an increased pressure drop acrossthe sensor, the sensor turns on the corresponding PUMPFAULT light ( a high flow rate from the case drain of a pumpmay indicate impending pump failure). Power to operate thelights is supplied by the No. 1 DC bus through the HY-DRAULICS MAINT PNL circuit breaker on the No. 1 PDP.2-9-6. ENGINE CHIP DETECTOR Section.This section consists of two magnetic indicators labeledNO. 1 and NO. 2. When the corresponding ENGINE CHIPDETECTOR is bridged by ferrous particles, the associatedchip detector indicator changes from all-black to black-and-white. In addition, the ENG CHIP DET caution will illumi-nate on the master caution panel.2-9-7. GROUND CONTACT Section.CAUTIONShould either or both GROUND CONTACTindicating lights remain illuminated afterlift-off to hover, the indicated system(s)DASH will not function properly in forwardflight. If both GROUND CONTACT indicat-ing lights remain illuminated after lift-off,the AUTO function of both cyclic trimssystem will be inoperative.This section consists of two indicating lights labeled L andR. When the landing gear proximity switch is activated, theappropriate GROUND CONTACT indicating light will illumi-nate.2-9-8. GND Switch.NOTEWhile in flight, the flight engineer shall alertthe pilot when placing the GND switch on theMAINTENANCE PANEL to TEST. Placing theswitch to TEST will cause the NO. 1 and NO.2 ENG CHIP DET, XMSN OIL HOT andXMSN CHIP DET cautions to illuminate.The GND switch allows the flight engineer to perform a BITE(Built In Test Equipment) test on the circuitry of the MAINTE-NANCE PANEL. The switch is springloaded and locked atcenter-off position. At TEST, a black and white display ap-pears on all magnetic BITE indicators. At RESET, all mag-netic BITE revert to an all-black indication. Power is suppliedto the switch by the No. 1 DC bus through the HY-DRAULICS MAINT PNL circuit breaker No. 1 PDP.2-9-9. Windshield Wipers.CAUTIONTo prevent windshield damage, do not op-erate windshield wipers when windshieldare dry.Two electrically driven windshield wipers (3, fig. 2-1-3) areinstalled, one on each pilot windshield. One motor operatesboth wipers through two flexible shafts and two windshieldwiper converters. The windshield wiper motor is controlledby the W/S (windshield) WIPER switch located on the over-head switch panel. Power is supplied by the No. 2 DC busthrough the WSHLD WIPER circuit breaker on the No. 2PDP.The W/S WIPER switch has five positions labeled OFF,SLOW, MED, FAST, and PARK. Wiper speed can be ad-justed as desired, by rotating the switch from OFF. At OFF,the wipers will stop immediately at any position on the arc